8 Stem changers Sandal verbs (ir stem-changers are a pain in the “boot”)For a verb to stem-change in preterit:1. it must be an –ir verb2. it must stem-change in the present.3. it must be 3rd person (él or ellos form)The new stem change is ei and ou(…8 examples – write the 4 in black to have one of each kind)